William steees



W; STEERS. Bench-Plane.

No. 221,452. Patented May 11, I880.

IN VEN TOR WITNESSES ATTORNEY N. PE IERS, PNIOTO-UTNOGRAPHER, WASHINGTON. n c.

UNITE STATES PATENT ()EFIGE.

WILLIAM STEERS, OF SHERBROOKE, oUEBEo, oANADA.

BENCH-PLANE.

SPECIFICATION forming part of Letters Patent No. 227,452, dated May 11, 1880.

Application filed February 2, 1880. v

To all whom it may concern Be it known that 1, WILLIAM STEERs, of the city of Sherbrooke, in the Province of Quebec, in the Dominion of Canada, have invented new and useful Improvements in Me- 'tallic Planes, which improvements are fully set forth in the following specification, reference being bad to the accompanying drawmg.

The first part of my invention relates to the device by which the knife or iron is adjusted to various inclinations and secured in any position to suit the various degrees of hardness and grain of the difl'erent kinds of wood on which it may be used. The second part relates to the device by which the cap or backiron is adjusted to suit the required angle of the knife, and at the same time the back-iron serves in place of both holder and of backiron or cap as ordinarily used; and, thirdly, to the device by which the knife is regulated to project from the face of the plane.

The figure in the drawing is a longitudinal sectional elevation.

A represents the metallic body of the plane. B is the knife or iron,- in the back of which is a series of parallel horizontal grooves, M M, in one of which (that is determined by the extent to which the knife has been worn and ground away) works the pin E, which is secured to the nut D in a position somewhat eccentric, so as to impart, when the nut is rotated, such a movement to the knife B as will cause it to project or recede from the face of the plane.

The nut D works upon a screw, 0, which is rigidly attached to the body of the plane A. The back-iron or cap F may be either entirely of steel, or may be made partly of steel fused or otherwise attached to a plate of east-iron or other suitable material, and carries the thumb-screw Gr, for the purpose of locking the various parts in any required relative positious;

H is a metallic cylinder placed transversely to the body of the plane in such a position as will allow the upper face of the holder or cap F to bear evenly against it, and is provided at one end with a slot for the end of a screwdriver, and also at or near its middle with a projecting pin, K, which Works in a slot, L, in the cap F, and causes the cap F to approach or recede from the cutting-edge of the knife,

according to the rotation of the cylinder H.

The operation of this plane is as follows Should the material to be planed be pine or other soft wood, the knife or iron should be placed in the position shown in the drawing; but if the material be birch or other hard wood the operator would first turn the thumb-screw G, causingits point to recede sufficiently from the knife or iron B so as to allow the nut D to be turned to raise the knife B to the position shown in dotted lines at N, or any other intermediate position which the grain of the material may require, the nut D bein g left at such a portion of a revolution as will have allowed the pin E, which-Works in the slot M, by its eccentric movement, to cause the knife B to project to a proper extent from the face of the plane. Each portion is then looked in i ts relative position by turning the th umb-screw G and bringing its point to bear upouthe face of the knife B. Should the wood in either case be of such agrain or conformation as to require the edge of the back-iron or holder F to be nearer to or farther from the edge of the knife or iron B, the operator would, by the use of a screw-driver inserted in the slotted end of the cylinder H, partially rotate the said cylinder until the piuK, working in the slot L, caused the holder to assume the required position before looking by means of the thumbscrew Gr.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the revolving cylinder H, having a projecting pin, K, and a slot in its end for being operated by a screw-driver, the back-iron or cap F, having an orifice, L, the plane-iron B, having notches in the under side, the nut D, having an eccentric pin, E, screw 0, and set-screw G, all substantially as and for the purpose described. I

2. In a plane, the cylinder H, having in its end a slot for a screw-driver and on its under side a projecting pin, K, in combination with the back-iron of the plane, having a slot, L, all substantially as and for the purpose described.

LoUIs S. LA BILLE, THoMAs W. SANNER. 

